Abstract
As the most promising stem cell, bone marrow-derived mesenchymal stem cells (BMSCs) has attracted many attentions and applied widely in regenerative medicine. A biodegradable polyester with tunable affinity to BMSCs plays critical role in determining the properties of the BMSCs-based constructs. In this study, maleimide functionalized biodegradable polyester (P(MTMC-LA)) was synthesized through ring-opening copolymerization between l-lactide (LA) and furan-maleimide functionalized trimethylene carbonate (FMTMC) and a subsequent retro Diels-Alder reaction. P(MTMC-LA) was modified by different amounts of BMSCs specific affinity peptide (EPLQLKM, E7) through click-chemistry to investigate the effect on BMSCs. The E7 peptide modified P(MTMC-LA) was casted into films on glass slides and BMSCs were seeded onto the films. In vitro study showed that E7 peptide modified P(MTMC-LA) films supported BMSCs adhesion and proliferation compared to unmodified P(MTMC-LA) film. Besides, the adhesion and proliferation were enhanced by the increasing peptide grafting ratio. These results indicated that the novel biodegradable polyester can serve as a biomaterial with great potential application in tissue engineering and regenerative medicine.
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